n. Ordinary dress, as opposed to full dress or uniform, regarded as “dress” in a special sense; a loose negligent dress.Pertaining to ordinary attire; hence, informal; unostentatious; simple: as, an undress uniform.To take off the clothes of; strip: as, to undress a child.To divest of ornaments or elegant attire; disrobe. To take the dressing, bandages, or covering from, as a wound.To take off one's dress or clothes.